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Yahoo! Holds Off on Phone Ads

Yahoo!(YHOO - Get Report) isn't jumping on the pay-per-call ad bandwagon just yet.

Some analysts see pay-per-call as an untapped and potentially lucrative market for Web companies. The concept got a high-profile endorsement Monday when
Google(GOOG - Get Report) and
eBay(YHOO - Get Report) said they would begin testing call services next year as part of their much-discussed advertising alliance.

There seems to be little doubt that Google and eBay want to deploy the feature, in which consumers make Internet phone calls through icons they see on advertisements. The companies said they would use both Google Talk and eBay's Skype in offering "another innovative way to connect with customers," Google Chief Executive Eric Schmidt said Monday.

But Yahoo!, which is already under pressure on Wall Street to keep pace with Google's ever-lengthening stride, wasn't ready Tuesday to commit.

"As part of this ongoing testing, we are currently evaluating the advertising opportunity that pay-per-call presents," Dina Freeman, a Yahoo! spokeswoman, wrote Tuesday in an email. "Once our tests are complete, we will use the data to determine whether it makes sense to offer a pay-per-call service to our advertisers."

She declined to be more specific. Yahoo!'s stance highlights uncertainties surrounding the level of demand for these types of ads.

Yahoo! already has plenty on its plate, including a search-engine upgrade, dubbed Project Panama. The company's July decision to push back the overhaul unnerved investors and sent shares reeling.